[IgorPartola]

Yes, you can shout and be obnoxious and get what you want. Or you can be nice, polite and full of cash and/or smiles and get what you didn't expect. There are certainly more ways to go about something than just tipping and bribing, but in my experience I can always get the same result as long as I'm nice, polite but persuasive.

[slavak]

In addition I'd like to point out that it's generally a good idea to not be obnoxious to the person who is going to handle your FOOD. You might get a little extra in terms of service, but you're practically guaranteed to get a little something extra in your food...